Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419431 | One- or two-component diazo-type material with diphenyl diamine as light fade inhibitor | Regina Lischewski, Jorg Marx, Reinhard Walter | 1983-12-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419431 | One- or two-component diazo-type material with diphenyl diamine as light fade inhibitor | Regina Lischewski, Jorg Marx, Reinhard Walter | 1983-12-06 |